code.delx.au - pulseaudio/blob - src/pulsecore/log.h

   1 #ifndef foologhfoo
   2 #define foologhfoo
   3
   4 /***
   5   This file is part of PulseAudio.
   6
   7   Copyright 2004-2006 Lennart Poettering
   8   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   9
  10   PulseAudio is free software; you can redistribute it and/or modify
  11   it under the terms of the GNU Lesser General Public License as published
  12   by the Free Software Foundation; either version 2 of the License,
  13   or (at your option) any later version.
  14
  15   PulseAudio is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with PulseAudio; if not, write to the Free Software
  22   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23   USA.
  24 ***/
  25
  26 #include <stdarg.h>
  27 #include <stdlib.h>
  28 #include <pulse/gccmacro.h>
  29
  30 /* A simple logging subsystem */
  31
  32 /* Where to log to */
  33 typedef enum pa_log_target {
  34     PA_LOG_STDERR,  /* default */
  35     PA_LOG_SYSLOG,
  36     PA_LOG_USER,    /* to user specified function */
  37     PA_LOG_NULL     /* to /dev/null */
  38 } pa_log_target_t;
  39
  40 typedef enum pa_log_level {
  41     PA_LOG_ERROR  = 0,    /* Error messages */
  42     PA_LOG_WARN   = 1,    /* Warning messages */
  43     PA_LOG_NOTICE = 2,    /* Notice messages */
  44     PA_LOG_INFO   = 3,    /* Info messages */
  45     PA_LOG_DEBUG  = 4,    /* debug message */
  46     PA_LOG_LEVEL_MAX
  47 } pa_log_level_t;
  48
  49 /* Set an identification for the current daemon. Used when logging to syslog. */
  50 void pa_log_set_ident(const char *p);
  51
  52 typedef void (*pa_log_func_t)(pa_log_level_t t, const char*s);
  53
  54 /* Set another log target. If t is PA_LOG_USER you may specify a function that is called every log string */
  55 void pa_log_set_target(pa_log_target_t t, pa_log_func_t func);
  56
  57 /* Minimal log level */
  58 void pa_log_set_maximal_level(pa_log_level_t l);
  59
  60 void pa_log_level_meta(
  61         pa_log_level_t level,
  62         const char*file,
  63         int line,
  64         const char *func,
  65         const char *format, ...) PA_GCC_PRINTF_ATTR(5,6);
  66 void pa_log_levelv_meta(
  67         pa_log_level_t level,
  68         const char*file,
  69         int line,
  70         const char *func,
  71         const char *format,
  72         va_list ap);
  73
  74 void pa_log_level(pa_log_level_t level, const char *format, ...) PA_GCC_PRINTF_ATTR(2,3);
  75 void pa_log_levelv(pa_log_level_t level, const char *format, va_list ap);
  76
  77 #if __STDC_VERSION__ >= 199901L
  78
  79 /* ISO varargs available */
  80
  81 #define pa_log_debug(...)  pa_log_level_meta(PA_LOG_DEBUG,  __FILE__, __LINE__, __func__, __VA_ARGS__)
  82 #define pa_log_info(...)   pa_log_level_meta(PA_LOG_INFO,   __FILE__, __LINE__, __func__, __VA_ARGS__)
  83 #define pa_log_notice(...) pa_log_level_meta(PA_LOG_NOTICE, __FILE__, __LINE__, __func__, __VA_ARGS__)
  84 #define pa_log_warn(...)   pa_log_level_meta(PA_LOG_WARN,   __FILE__, __LINE__, __func__, __VA_ARGS__)
  85 #define pa_log_error(...)  pa_log_level_meta(PA_LOG_ERROR,  __FILE__, __LINE__, __func__, __VA_ARGS__)
  86
  87 #else
  88
  89 #define LOG_FUNC(suffix, level) \
  90 PA_GCC_UNUSED static void pa_log_##suffix(const char *format, ...) { \
  91     va_list ap; \
  92     va_start(ap, format); \
  93     pa_log_levelv_meta(level, NULL, 0, NULL, format, ap); \
  94     va_end(ap); \
  95 }
  96
  97 LOG_FUNC(debug, PA_LOG_DEBUG)
  98 LOG_FUNC(info, PA_LOG_INFO)
  99 LOG_FUNC(notice, PA_LOG_NOTICE)
 100 LOG_FUNC(warn, PA_LOG_WARN)
 101 LOG_FUNC(error, PA_LOG_ERROR)
 102
 103 #endif
 104
 105 #define pa_log pa_log_error
 106
 107 #endif